It's a hard plastic line running from booster to top left, towards very front of I guess the top of the intake manifold/bottom of plenum. I'm not so sure on these trucks where one ends and the other begins. Photos should help.
Need to replace it. Yeah good luck, right. While trying to remove the damn thing grenaded on me. Should be a double push in clip lock thing... You'll see it ain't there no more.







Man I hope these pics come through. I'm usually very good at tracking down obscure part numbers but shut down on this one....thanks!!!!

 

Ahhh. Never works. I gotta link to the page where pics are hosted top I can get them posted directly....ugh....

http://postimg.org/gallery/2edymhpau/

 

 

 

 

Ok. It's a miracle!
First pic shoes end of hardline in question. Again, end that would clip onto nipple is busted off so it'll look a tad different.

Second pic is the other end where it goes into the booster.

Third is my attempt to point out the nipple it would clip onto.

Thanks guys.
I swear there ain't a piece you can't touch without it cracking, breaking off, or down right disintegrating on you. Interior, exterior, or mechanical!
It's a labor of love I swear. No one ever gets rich rehabbing rovers.....

 

youre right all that heat under hood heat dries and cracks all the plastic and rubber hoses

 

I'm in need of this post as well. I can't find it and we don't have any correct discoverys at our junkyard to pull one from... Please update when you find a part number

 

Tentatively, I'm offering up NTC9677 for the brake vacuum hose to the inlet manifold. With that, the non return valve is RTC5907. The washer is 232043 and the clip is CN100168L. Both the hose and the valve appear to be no longer available here in the US.

 

Negatory on those numbers. There's one on eBay and done various other sites and it's a different line all together. Appreciate the attempt.
Ugh. The saga continues....